, Volume 52, Issue 2, pp 451-457
Date: 03 Aug 2007

Probing noncommutative space-time in the laboratory frame

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Abstract

The phenomenological investigation of noncommutative space-time in the laboratory frame is presented. We formulate the apparent time variation of noncommutativity parameter θμν in the laboratory frame due to the earth’s rotation. Furthermore, in the noncommutative QED, we discuss how to probe the electric-like component θ E =(θ010203) by the process \(e^-e^+\rightarrow\gamma\gamma\) at future e-e+ linear collider. We may determine the magnitude and the direction of θ E by detailed study of the apparent time variation of the total cross-section. If no signal is observed, the upper limit on the magnitude of θ E can be determined independent of its direction.